| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Braunfels | 1 | 128,712 | 91,640 | 5.08% | 2,858 | 45 | City |
| Bulverde | 2 | 7,695 | 5,710 | 4.88% | 487 | 16 | City |
| Garden Ridge | 3 | 4,413 | 4,196 | 0.96% | 618 | 7 | City |
| Spring Branch | 4 | 278 | 217 | 4.12% | 136 | 2 | City |
New Braunfels is the largest city in Comal County, with a population of 128,712.
Spring Branch is the smallest city in Comal County, with a population of 278.
There are 4 cities in Comal County, Texas.